| 冬小麦叶片水分利用效率和光合速率研究 |
| |
| 引用本文： | 马莉,王长荣,王博欣,施坰林.冬小麦叶片水分利用效率和光合速率研究[J].甘肃农业大学学报,2012,47(1):73-77. |
| |
| 作者姓名： | 马莉 王长荣 王博欣 施坰林 |
| |
| 作者单位： | 1. 甘肃农业大学工学院,甘肃兰州,730070
2. 酒泉职业技术学院,甘肃酒泉,735000 |
| |
| 基金项目： | 国家自然科学基金项目(50909098);973计划资助项目(2006CB403405);中国水科院研究专项(节集0906) |
| |
| 摘 要： | 以北京大兴实验站冬小麦为研究对象,依据涡度相关系统和光合测定仪实测数据,分析了冬小麦在叶片和农田尺度上的水分利用率变化特征,并探讨了净光合速率与CO2通量之间的关系.研究发现:冬小麦田间CO2通量与净光合速率在抽穗期最大,拔节期、开花期和灌浆期相差不大；作物水分利用效率的日变化规律在农田尺度和叶片尺度基本相似,即早8:...
|
| 关 键 词： | 冬小麦 CO2通量 净光合速率 水分利用率 |
A study on the water use efficiency in leaves and on field scale for winter wheat |
| |
| MA Li
,
WANG Chang-rong
,
WANG Bo-xin
,
SHI Jiong-lin.A study on the water use efficiency in leaves and on field scale for winter wheat[J].Journal of Gansu Agricultural University,2012,47(1):73-77. |
| |
| Authors: | MA Li WANG Chang-rong WANG Bo-xin SHI Jiong-lin |
| |
| Institution: | MA Li1,WANG Chang-rong2,WANG Bo-xin1,SHI Jiong-lin1(1.College of Technology,Gansu Agricultural University,Lanzhou 730070,China; 2.Jiuquan Vocational Technical College,Jiuquan 735000,China) |
| |
| Abstract: | The variation of water use efficiency in leaves and on field scale for winter wheat was analyzed based on data collected by the eddy covariance system and photosynthesis analyzer at Beijing Daxing Experiment Station.The relationship between net photosynthesis and CO2 flux was also discussed.Results showed that winter wheat had the highest net photosynthetic rate and CO2 flux at heading stage,but no differences in those parameters at jointing,flowering and filling periods.The daily water use efficiency on field scale was similar to that in leaves,i.e.the highest at 8∶00~10∶00(0.015 and 0.006 g/g),stable during 14∶00~18∶00(0.006 and 0.004 g/g) and approaching zero after 20∶00. |
| |
| Keywords: | winter wheat CO2 flux net photosynthetic rate water use efficiency |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
